Tire-repairing device.



E. A. HOLGOMB. TIRE REPAIRING DEVICE. APPLIOATION mum DEC. 7, 190a.

Patented Nov. '22, 1910.

{ INVENTOR.

Q. BY M ATTORNEY.

WITNESSES ,2? 0M fairs earnsare.

ERNEST A. HOLCOMB, F HAIEtTJFORID, CONNECTICUT.

TIRE-REPAIRING DEVICE.

assess;

Specificationof Letters Eatent.

Application filed December 7, 190%. Serial No. 466,270.

The device is adapted for use in repairing the outer casings or shoes ofdouble tube tires, such as the tires used on automobiles, and more especially for use during the vulcanizing process in patching the tread of such a shoe;

. The object of the invention is to provide a device of the character described having features of novelty and advantage.

In the draWingsFigure 1 is a side elevation of the device. Fig. 2 is an end view thereof. Fig. 3 .is a detail ofpa-rt of the spreader.

In patching the treadof a tire shoe the "old rubber is stripped 01f of the part to be etched as much as possible, the raw rubber is then applied and the tire placed in a mold which covers'the part to be patched. pressure of some sort is introduced into the interior of the shoe, forcing it and holding it securely in the mold during the vulcanizing process. Heretofore the usual method of exerting this pressure on this shoe was by what is known as an air-bag, which was an I infiatable'bag placed "inside of that part of the shoe which was in the mold, the bag being inflated so as to press the shoe against the mold. y

My invention provides a mechanical contrivance for exerting this pressure on the interior of the shoe to force it against and hold it in place in the mold. It comprises a collapsible core which when collapsed can be inserted into the interior of the shoe, and means for expanding the -core so as to exert an even pressure on all parts of the shoe against the interior of the mold wall.

(1 denotes the core madeup, as shown, of

six sections, indicated by numerals from 1- to 6. These sections are held together by an expansible rihg I; located at each end of the core. The'completed core is pierced longitudinally, the opening through it having acentral enlargement 0 connected With the smaller passages (l at each end of the core, by the corneal seats 0. A spreading member 6 of conical form is located in each of the ponlcal seats 0 and mounted on rods f which carried by the Wedge 10.

in this way.

' cntend through the passages cl. At the outer ends of the rods 7 are located coiipersting wedges Ill-20, held in place on the rods by the nuts 15. The Wedges-20 are forked and are secured to a forked bar 21, seen in Fig. 3, so that theycan move. transversely of the rod f. The Wedges '10 are .held against movement transversely with respect to the rod. The forked bar 21 has its end bent at'right angles, as shown at 22.

Strut members 23 are mounted on the rod f between the ends of the core and the bar 21, the ends of these strut members being bent, as indicated at 21, and resting on a pin 11 The end of the bar 21 is threaded and passes through holes in the bent end 2% of the strut members 23.

and are engaged by nuts 25.

The manner of use of the device is as follows. The core can be collapsed by slipping the wedges and unloosening the nuts 15 so that the spreading members 6 can be moved inwardly to the position indicated at e in Fig. 1. The device is now inserted in the shoe and the nuts 15 are turned, drawing the Patented Nov. 22;, 191%. i

spreading members e into the conical seats c, spreading the device as much as possible The nuts 25 are now turned, moving the wedges 20' with respect to the wedges 10, exerting further force on the nuts 15 to still further expandthe core until sufiicient pressure has been brought to bear on the interior of the shoe. Everything is now ready for the vulcanizing process and when this is completed, by reversal of the operations last above described the core can be readily extracted from the tire.

There is provided in this device a mechanical device for exerting an even pressure on all parts of the tire, thus getting an evcggg distribution of the rubber around the tire during the vulcanizing process. The device is cheaply and strongly made and gives uniformly even results.

I am aware thatmy invention is susceptible of various modifications and I do not Wish to be understood as limiting myself to the precise structure illustrated and described herein.

I claim 1. A device for use in repairing the outer casing or. shoe of a vehicle tire comprisin a collapsible core made up of a plurality of in dependent longitudinal sections arranged together to approximate the shape of the interlor o'fa shoe, expa s ble binders for holdmovable le casing. or shoe of a .core having opposite means 0 erable from outside said s 3 A i casing or shoe of a vehicle tire com ing the parts of said core in normal position, i

hinders for and means independent ol said expanding said core.

2. A device for use in repairing the outer casing or shoe of a vehicle tire comprising a collapsible core made up of a plurality of independentlongitudinal sections arranged together .to approximate the shape of and adapted to fit t e interior of a shoe, expansible binding rings encircling the ends of said 'core sections, means located withir hnd wise thereof for expa'rrdin g said core, and actuators for saldyjex anding cvice for use in repairing the outer I'lSlIlg a of a plurality of 1ncollapsible core made 11 sect-ions arranged todependent longitudiu "gether to approximate the shape of the insides and formed in part in each section, ex-

panding members located in said sockets, and means or moving said expanding members in opposite directions lengthwise of said core,

5. In a device of the character described a core madenpof a plurality of longitudinal sections, a passage extending lengthwise through said core centrally thereof, said passage having an enlarged central portion connecting with the smaller end portionsby oppositely .disposed conical seats, conical spreading "members ada ted to coiiperate with said conical seats, ars. carrying'said spreading members and extending in oppo' site directions through and beyond the ends of said core, nuts engaging the ends of said bars, and'cooperating wedges located on said bars, one of said wed es bein adapted for movement transverse of t e bars, and means for moving sai wedge.

6. A device of the character described comprising a core formed of a pluralit of longitudinal sections, a passage exten ing lengthwise through said oore centrally therei of and having an enlarged centralportion connected with the end passages by oppositely disposed conical seats, conical spread mg members located 111 sa1d seats and* adapted for movement lon core, bars connected wit said spreading members and extending in opposite directions through and beyond the ends of said core, strut members mounted 'on said bars at the ends of said core, a wedge on each bar 'tudinally of said held against movement transversely ofsaid, M

bars, and a second Wedge located between the.

first-mentioned. wedges and said struts and movable transverselyof said bar, and means connected with said transversely moving for moving said wedges transvcrsel of said bar, substantially as described an for the purposes set forth.

ERNEST A. HOLCOMB.

\Vitnesses:

D. I; KREIMENDAH H. E. HART.

wedges and having a bearing on saidstrnts 

